221324110131 has 16 divisors (see below), whose sum is σ = 307941949440. Its totient is φ = 141128370240.

The previous prime is 221324110127. The next prime is 221324110141. The reversal of 221324110131 is 131011423122.

It is not a de Polignac number, because 221324110131 - 2² = 221324110127 is a prime.

It is a super-2 number, since 2×221324110131² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 221324110098 and 221324110107.

It is not an unprimeable number, because it can be changed into a prime (221324110141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2138190 + ... + 2239308.

It is an arithmetic number, because the mean of its divisors is an integer number (19246371840).

Almost surely, 2^221324110131 is an apocalyptic number.

221324110131 is a deficient number, since it is larger than the sum of its proper divisors (86617839309).

221324110131 is a wasteful number, since it uses less digits than its factorization.

221324110131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132866.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 221324110131 its reverse (131011423122), we get a palindrome (352335533253).

The spelling of 221324110131 in words is "two hundred twenty-one billion, three hundred twenty-four million, one hundred ten thousand, one hundred thirty-one".